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ab60847822
While postgres' use of SSL renegotiation is a good idea in theory, it turned out to not work well in practice. The specification and openssl's implementation of it have lead to several security issues. Postgres' use of renegotiation also had its share of bugs. Additionally OpenSSL has a bunch of bugs around renegotiation, reported and open for years, that regularly lead to connections breaking with obscure error messages. We tried increasingly complex workarounds to get around these bugs, but we didn't find anything complete. Since these connection breakages often lead to hard to debug problems, e.g. spuriously failing base backups and significant latency spikes when synchronous replication is used, we have decided to change the default setting for ssl renegotiation to 0 (disabled) in the released backbranches and remove it entirely in 9.5 and master.. Author: Michael Paquier, with changes by me Discussion: 20150624144148.GQ4797@alap3.anarazel.de Backpatch: 9.0-9.4; 9.5 and master get a different patch |
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